EP1372435B1 - Pumpe mit axialer führung - Google Patents

Pumpe mit axialer führung Download PDF

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Publication number
EP1372435B1
EP1372435B1 EP02761991A EP02761991A EP1372435B1 EP 1372435 B1 EP1372435 B1 EP 1372435B1 EP 02761991 A EP02761991 A EP 02761991A EP 02761991 A EP02761991 A EP 02761991A EP 1372435 B1 EP1372435 B1 EP 1372435B1
Authority
EP
European Patent Office
Prior art keywords
pump
fluid
fluid conduit
vane
outer housing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP02761991A
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English (en)
French (fr)
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EP1372435A1 (de
Inventor
Robert B. Chaffee
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Individual
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Individual
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Filing date
Publication date
Priority claimed from PCT/US2001/015834 external-priority patent/WO2001087121A2/en
Application filed by Individual filed Critical Individual
Publication of EP1372435A1 publication Critical patent/EP1372435A1/de
Application granted granted Critical
Publication of EP1372435B1 publication Critical patent/EP1372435B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C27/00—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas
    • A47C27/08—Fluid mattresses or cushions
    • A47C27/081—Fluid mattresses or cushions of pneumatic type
    • A47C27/082—Fluid mattresses or cushions of pneumatic type with non-manual inflation, e.g. with electric pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D17/08—Centrifugal pumps
    • F04D17/16—Centrifugal pumps for displacing without appreciable compression
    • F04D17/165—Axial entry and discharge
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/44—Fluid-guiding means, e.g. diffusers
    • F04D29/441—Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid pumps
    • F04D29/444—Bladed diffusers

Definitions

  • the present invention is related to pumps and, more specifically, to pumps for use with inflatable devices.
  • a pump is used to supply air to an orifice in the inflatable device.
  • Such pumps may include a motor that drives an impeller, moving the air into the inflatable device.
  • Motorized pumps may be powered by electricity.
  • electricity is provided by a connection to standard house current or, where portability is desired, by batteries.
  • a pump comprising an outer housing including an outlet constructed to provide fluid to an inflatable device; an inner housing positioned within the outer housing and defining a fluid conduit between the inner housing and the outer housing; a motor positioned within the inner housing; a vane occupying a majority of the fluid conduit, wherein the vane is configured to direct a flow of the fluid in a generally axial direction in the fluid conduit; and an impeller connected to the motor, wherein the pump is constructed with an average distance between an inner surface of the outer housing and an outer surface of the inner housing configured to improve the flow of fluid such that the vane in combination with the fluid conduit enhance a pressurization of the fluid and provide the axial fluid flow of air through the fluid conduit.
  • the present invention also provides an inflatable device comprising a substantially fluid impermeable bladder, a valve assembly and a pump according to the invention, the pump being detachably connected to the valve assembly.
  • a method of enhancing the pressurization of a fluid flowing through a fluid conduit between the inner and outer housings of a pump, the pump having a vane that occupies a majority of the fluid conduit, the vane being configured to direct a flow of the fluid in a generally axial direction in the fluid conduit the method including the step of constructing the pump so that an average distance between an inner surface of the outer housing and an outer surface of the inner housing improves the flow of fluid such that the vane in combination with the fluid conduit enhances the pressurization of the fluid and provides the axial fluid flow of air through the fluid conduit.
  • the present invention is directed to a pump with an axial fluid conduit.
  • the pump of the present invention may include an outer housing and an inner housing positioned within the outer housing.
  • the axial fluid conduit may be defined between the inner housing and the outer housing.
  • a motor may be positioned within the inner housing and an impeller positioned within the fluid conduit and connected to the motor.
  • the pump 10 may include an outer housing 20 and an inner housing 30 positioned within outer housing 20.
  • a fluid conduit 40 may be defined between outer housing 20 and inner housing 30.
  • a motor 50 may be positioned within inner housing 30 and an impeller 60 positioned within fluid conduit 40 and connected to motor 50.
  • the connection may be any attachment known to those of skill in the art.
  • Outer housing 20 may be constructed in any manner and of any material(s) that render pump 10 sufficiently durable for its intended application and provide a suitable outer wall for fluid conduit 40.
  • outer housing 20 may be constructed of a lightweight, inexpensive, durable, and fluid-tight material.
  • Outer housing 20 may also be shaped such that it is not cumbersome.
  • outer housing 20 may be ergonomically designed.
  • Materials for construction of outer housing 20 include a wide variety of relatively rigid thermoplastics, such as polyvinyl chloride (PVC) or acrylonitrile-butadiene-sytrene (ABS).
  • PVC polyvinyl chloride
  • ABS acrylonitrile-butadiene-sytrene
  • outer housing 20 may also be constructed of other materials, such as metals, metal alloys, and the like.
  • Outer housing 20 may be constructed in any shape capable of containing an inner housing 30.
  • outer housing 20 may be constructed generally cylindrically.
  • outer housing 20 may be larger (e.g., have a larger diameter) where it contains inner housing 30, and smaller (e.g., have a smaller diameter) at an inlet 22 and an outlet 24 of outer housing 20.
  • inlet 22 and outlet 24 have been labeled arbitrarily and that fluid can be moved through pump 10 in either direction.
  • pump 10 may be operated in a first direction to push air from inlet 22 to outlet 24 or in a second direction to pull air from outlet 24 to inlet 22.
  • Inlet 22 may be constructed to facilitate air flow into fluid conduit 40.
  • inlet 22 may be constructed to prevent blockage of inlet 22.
  • inlet 22 includes protrusions 26 to inhibit blockage of inlet 22.
  • Inlet 22 may also be constructed to prevent foreign objects from contacting impeller 60.
  • inlet 22 may be constructed to have multiple small openings that are relatively difficult for a foreign object, such as a finger, to enter.
  • protrusions 26 of inlet 22 are constructed as slats, inhibiting foreign objects from contacting impeller 60.
  • Outlet 24 may be constructed to provide fluid to a desired location.
  • outlet 24 may be constructed to provide fluid to an inflatable device.
  • outlet 24 includes structure to lock to an inlet of an inflatable device and to bias a valve of the inlet to an open position when the pump is moving fluid to the inflatable device.
  • the pump may include a solenoid to bias open the valve when the pump is adding fluid to, drawing fluid from, the inflatable device
  • Inner housing 30 may also be constructed in any manner and of any material(s) that are suitable for containment within outer housing 20, for serving as the inner wall of fluid conduit 40 and for containing motor 50.
  • inner housing 30 may be constructed to fit within outer housing 20, so as to provide the fluid conduit 40.
  • inner housing 30 is constructed such that it is evenly spaced from an inner surface of outer housing 20.
  • the shape of inner housing 30 may be selected to be compatible with the shape of outer housing 20. For example, where outer housing 20 is generally cylindrical, inner housing 30 may also be generally cylindrical.
  • Inner housing 30 may also be constructed to securely contain motor 50.
  • inner housing 30 may include internal structure to maintain motor 50 in a desired location.
  • Inner housing 30 may include structure to hold motor 50 in a desired location without allowing undesired vibration or noise.
  • inner housing 30 may also be constructed to contain one or more batteries to provide electrical power to motor 50.
  • Inner housing 30 may be constructed of any material(s) sufficiently durable to contain motor 50 and suitable for use with the fluid to be pumped.
  • inner housing 30 may be constructed out of any of the same materials as outer housing 20 described supra.
  • Fluid conduit 40 may be defined by the construction of outer housing 20 and inner housing 30. Fluid conduit 40 may provide sufficient space for fluid flow, so as not to create a significant pressure drop. Fluid conduit 40 may also be regular in shape and substantially free of irregularities that may interfere with efficient fluid flow, potentially creating turbulence, noise and pressure loss.
  • Fluid conduit 40 may include structure to improve the flow of fluid through fluid conduit 40 and enhance pressurization. Improving the flow through fluid conduit 40 may decrease turbulence and generally result in a pump that is quieter and more efficient. Flow is preferably directed such that the fluid is not forced to make any sudden changes in direction. Fluid conduit 40 is generally axial in direction and impeller 60 will generally impart a rotational force on the fluid relative to the axis of fluid conduit 40. Accordingly, any structure included to improve the flow of fluid through fluid conduit 40 is preferably constructed so as to not inhibit the generally axial movement of fluid through fluid conduit 40, and may allow for the rotation of fluid within fluid conduit 40.
  • the pump is provided with structure to improve the flow of fluid through fluid conduit 40 and enhance pressurization, the structure occupying a majority of fluid conduit 40.
  • the structure for improving the fluid flow preferably occupies at least 75% of the length of fluid conduit 40, even more preferably 90% of the length of fluid conduit 40, and most preferably substantially all of the length of fluid conduit 40, improving flow throughout fluid conduit 40.
  • the structure occupies a majority of fluid conduit 40 is that the structure extends at least half way through the length of fluid conduit 40, not that it fills more than half the void space in fluid conduit 40.
  • a structure occupying the majority of fluid conduit 40 is substantially different from an arrangement that simply directs fluid from an impeller into an open fluid conduit because it controls the fluid flow through a greater portion of fluid conduit 40 and thus is better able to improve fluid flow.
  • structure to improve the flow of fluid through fluid conduit 40 and enhance pressurization includes one or more structures that direct flow of fluid.
  • fluid conduit 40 may include vanes 70 shaped to improve fluid flow through fluid conduit 40.
  • Vanes 70 may be constructed to direct fluid flow within fluid conduit 40 and to bridge fluid conduit 40 from an inner surface of outer housing 20 to an outer surface of inner housing 30, forcing fluid to flow through the channels defined by the vanes.
  • vanes 70 need not extend between the inner surface of outer housing 20 and the outer surface of inner housing 30 in all embodiments, or throughout the entire fluid conduit in such embodiments where they do so extend.
  • Vanes 70 may be constructed to minimize any abrupt changes in fluid flow associated with inefficient flow and increased pressure drop.
  • vanes 70 may be swept in a direction of the rotation imparted by impeller 60, and may direct the flow generally axially along fluid conduit 40.
  • vanes 70 straighten along the length of fluid conduit 40, allowing them to gradually redirect the air from primarily rotational movement to primarily axial movement.
  • Vanes 70 are preferably free of any rough edges or dead end pockets that may increase fluid resistance.
  • fluid conduit 40 may be relatively narrow.
  • the average distance between an inner surface of outer housing 20 to an outer surface of inner housing 30 may preferably be about 25%, more preferably about 10%, even more preferably about 5%, or less of the average diameter of outer housing 20.
  • the average distance between the inner surface of outer housing 20 to the outer surface of inner housing 30 is about 8% of the average diameter of outer housing 20.
  • the narrowness of fluid conduit 40 may itself act as a structure to improve the flow of fluid, directing it axially along the fluid conduit, rather than allowing it to enter a relatively open area. Accordingly, a narrow fluid conduit may be sufficient is some embodiments to reduce inefficient flow.
  • Fluid conduit 40 may also include structure to maintain the shape of fluid conduit 40.
  • fluid conduit 40 may include structure to secure inner housing 30 relative to outer housing 20.
  • this structure may include one or more struts connecting an inner surface of outer housing 20 to the outer surface of inner housing 30.
  • one or more vanes 70 serve to both direct the fluid flow and maintain the relationship between the inner and outer housings.
  • Motor 50 may be any device capable of rotating impeller 60 to produce fluid flow through pump 10.
  • motor 50 may be a conventional electric motor.
  • motor 50 is preferably an efficient, lightweight motor.
  • Motor 50 may also be relatively small, to reduce the overall size of pump 10. However, it is to be appreciated that even for a small overall size pump, the motor may still be relatively large compared to the overall size of the pump where it is desired to provide more pumping power.
  • Impeller 60 may be constructed in any manner and of any material(s) that allow impeller 60 to move fluid when rotated by motor 50.
  • impeller 60 may be constructed with fins capable of forcing fluid into or out of pump 10, depending on the direction of rotation of impeller 60.
  • Impeller 60 may be made of any material capable of maintaining a desired shape of impeller 60.
  • impeller 60 may be constructed of durable and lightweight material that is compatible with the fluid to be used in pump 10.
  • impeller 60 may be constructed of a thermoplastic, such as those mentioned for use in construction of outer housing 20.
  • pump 10 may be used in a variety of ways.
  • pump 10 may be an independent device, such as a hand holdable pump, and may be placed in contact or connected with an inflatable device when it is desired to inflate the device, typically at a valve 110.
  • pump 10 may be incorporated into the inflatable device, detachably or permanently.
  • FIGS. 7-9 One example embodiment of a pump 10 according to the present invention will now be described with reference to FIGS. 7-9 .
  • pump 10 may be connected to a substantially fluid impermeable bladder 120 in an inflatable device. Where pump 10 is connected to bladder 120, pump 10 may be configured so that it does not interfere with the use of the inflatable device.
  • the inflatable device may be constructed with pump 10 recessed into bladder 120, as illustrated in FIGS. 7-9 . Where pump 10 is recessed within bladder 120, it is an advantage of this embodiment that pump 10 will not interfere with the use of the inflatable device.
  • the exterior profile (total volume and shape) of pump 10 and the inflated device in combination may be substantially the same as the exterior profile of the inflated device absent the combination, thus reducing the opportunity for pump 10 to impact or interfere with the use of the inflatable device.
  • pump 10 is located within bladder 120 in a mattress application, it allows an inflatable standard sized mattress to fit into a standard sized bed frame.
  • pump 10 is located within bladder 120, it may be sized such that it will not come into contact with bladder 120 when bladder 120 is inflated, except at the point(s) of connection.
  • the pump of the present invention which may be constructed so as to be small and hand-holdable, may be useful in such an application.
  • U.S. Patent Application Serial No. 09/859,706 which is hereby incorporated by reference in its entirety.
  • An embedded pump 10 may be powered by conventional household current or by battery power. It should also be understood that pump 10 can be a hand holdable pump that is detachable from the inflatable device and is configured to mate with the inflatable device and to be embedded substantially within the bladder.
  • Outer housing 20 may house other structure in addition to inner housing 30 and motor 50.
  • outer housing may include fluid control structure such as valves. Valves may be operated manually, by using a solenoid, or using other conventional techniques. The structure to operate the valve may also be included within outer housing 20.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Claims (22)

  1. Pumpe, mit
    einem äußeren Gehäuse (20), welches einen Auslaß (24) hat, der so konstruiert ist, dass ein Fluid für eine aufblasbare Einrichtung zur Verfügung gestellt wird;
    einem inneren Gehäuse (30), welches innerhalb des äußeren Gehäuses (20) positioniert ist und welches einen Fluiddurchgang (40) zwischen dem inneren Gehäuse (30) und dem äußeren Gehäuse (20) definiert;
    einem Motor (50), welcher innerhalb des inneren Gehäuses (30) positioniert ist;
    einem Flügelrad (70), welches den Großteil des Fluiddurchganges (40) einnimmt, wobei das Flügelrad (70) dermaßen konfiguriert ist, dass es eine Strömung des Fluids in einer im Wesentlichen axialen Richtung in den Fluiddurchgang (40) leitet; und
    einem Kreiselrad (60), welches mit dem Motor (50) verbunden ist,
    wobei die Pumpe dermaßen konstruiert und konfiguriert ist, dass ein durchschnittlicher Abstand zwischen der inneren Oberfläche des äußeren Gehäuses (20) und einer äußeren Oberfläche des inneren Gehäuses (30) vorliegt, um die Strömung des Fluids so zu verbessern, dass das Flügelrad (70) in Kombination mit dem Fluiddurchgang (40) eine Druckbeaufschlagung des Fluids verstärkt und die axiale Fluidströmung von Luft durch den Fluiddurchgang (40) schafft.
  2. Pumpe nach Anspruch 1, wobei sich das Flügelrad (70) zwischen einer inneren Oberfläche des äußeren Gehäuses (20) und einer äußeren Oberfläche des inneren Gehäuses (30) erstreckt.
  3. Pumpe nach Anspruch 1, wobei das Flügelrad (70) eine Mehrzahl von Schaufeln (70) aufweist.
  4. Pumpe nach Anspruch 1, wobei das Flügelrad (70) eine Ablenkung vorsieht.
  5. Pumpe nach Anspruch 4, wobei die Ablenkung des Flügelrades (70) die Fluidströmung graduell durch den Fluiddurchgang (40) umlenkt, ausgehend von einer primären Rotationsbewegung in eine primär axiale Bewegung.
  6. Pumpe nach Anspruch 1, wobei der durchschnittliche Abstand zwischen der inneren Oberfläche des äußeren Gehäuses (20) und der äußeren Oberfläche des inneren Gehäuses (30) weniger als etwa 25 % des durchschnittlichen Durchmessers des äußeren Gehäuses (20) beträgt.
  7. Pumpe nach Anspruch 6, wobei der durchschnittliche Abstand zwischen der inneren Oberfläche des äußeren Gehäuses (20) und der äußeren Oberfläche des inneren Gehäuses (30) weniger als etwa 10 % des durchschnittlichen Durchmessers des äußeren Gehäuses (20) beträgt.
  8. Pumpe nach Anspruch 7, wobei der durchschnittliche Abstand zwischen der inneren Oberfläche des äußeren Gehäuses (20) und der äußeren Oberfläche des inneren Gehäuses (30) weniger als etwa 5 % des durchschnittlichen Durchmessers des äußeren Gehäuses (20) beträgt.
  9. Pumpe nach Anspruch 1, wobei der Fluiddurchgang (40) keine Staubereiche aufweist.
  10. Pumpe nach Anspruch 1, wobei die Pumpe dermaßen ausgebildet ist, dass diese mit einer aufblasbaren Einrichtung mittels einer Ventilanordnung (110) verbunden werden kann und ist.
  11. Pumpe nach Anspruch 10, wobei diese Verbindung permanent ist.
  12. Pumpe nach Anspruch 10, wobei ein Großteil der Pumpe und der Ventilanordnung (110) innerhalb einer Kammer (120) der aufblasbaren Einrichtung positioniert ist.
  13. Pumpe nach Anspruch 1, wobei die Pumpe als in der Hand haltbare Pumpe konstruiert ist.
  14. Pumpe nach Anspruch 1, wobei die Pumpe dermaßen konstruiert ist, dass diese innerhalb eines Profils einer aufblasbaren Kammer (120) einer aufblasbaren Einrichtung angeordnet werden kann.
  15. Pumpe nach Anspruch 1, wobei das Flügelrad (70) dermaßen konfiguriert ist, dass die Strömung durch den Fluiddurchgang verbessert ist, indem Turbulenzen in dem Fluiddurchgang (40) reduziert sind.
  16. Pumpe nach Anspruch 1, wobei sich das Flügelrad (70) über zumindest 90 % der Länge des Fluiddurchganges (40) erstreckt.
  17. Pumpe nach Anspruch 16, wobei sich das Flügelrad (70) über im Wesentlichen die gesamte Länge des Fluiddurchgangs erstreckt.
  18. Pumpe nach Anspruch 1, wobei das Fluid Luft ist, und wobei die Pumpe darüber hinaus eine Luftpumpe umfasst.
  19. Aufblasbare Einrichtung mit einer im Wesentlichen luftundurchlässigen Kammer (120), mit einer Ventilanordnung (110) und einer Pumpe nach irgendeinem der vorherigen Ansprüche, abnehmbar mit der Ventilanordnung (110) verbunden.
  20. Verfahren zur Verbesserung der Druckbeaufschlagung eines Fluids, welches durch einen Fluiddurchgang (40) zwischen einem inneren Gehäuse und einem äußeren Gehäuse (20, 30) einer Pumpe strömt, wobei die Pumpe ein Flügelrad (70) hat, welches den Großteil des Fluiddurchganges (40) einnimmt, und wobei das Flügelrad (70) dermaßen konfiguriert ist, dass die Strömung des Fluids in einer im allgemeinen axialen Richtung in den Fluiddurchgang (40) gelenkt ist, wobei das Verfahren den Schritt des Konstruierens der Pumpe umfasst, so dass ein durchschnittlicher Abstand zwischen einer inneren Oberfläche des äußeren Gehäuses (30) und einer äußeren Oberfläche des inneren Gehäuses (20) die Strömung des Fluids verbessert, so dass das Flügelrad (70) in Kombination mit dem Fluiddurchgang (40) die Druckbeaufschlagung des Fluids verbessert und die axiale Fluidströmung der Luft durch den Fluiddurchgang (40) schafft.
  21. Verfahren nach Anspruch 20, wobei der Schritt des Konstruierens der Pumpe die Ausbildung des Flügelrades (70) umfasst, so dass dieses sich ununterbrochen über zumindest 90 % der Länge des Fluiddurchganges (40) erstreckt.
  22. Verfahren nach Anspruch 21, wobei der Schritt des Konstruierens der Pumpe die Ausbildung des Flügelrades (70) umfasst, so dass dieses sich ununterbrochen über im Wesentlichen die gesamte der Länge des Fluiddurchganges (40) erstreckt.
EP02761991A 2001-03-30 2002-04-01 Pumpe mit axialer führung Expired - Lifetime EP1372435B1 (de)

Applications Claiming Priority (9)

Application Number Priority Date Filing Date Title
US28004001P 2001-03-30 2001-03-30
US28025701P 2001-03-30 2001-03-30
US280040P 2001-03-30
US280257P 2001-03-30
US859706 2001-05-17
WOPCT/US01/15834 2001-05-17
PCT/US2001/015834 WO2001087121A2 (en) 2000-05-17 2001-05-17 Inflatable device with recessed fluid controller and modified adjustment device
US09/859,706 US7039972B2 (en) 2000-05-17 2001-05-17 Inflatable device with recessed fluid controller and modified adjustment device
PCT/US2002/010073 WO2002082955A1 (en) 2001-03-30 2002-04-01 Pump with axial conduit

Publications (2)

Publication Number Publication Date
EP1372435A1 EP1372435A1 (de) 2004-01-02
EP1372435B1 true EP1372435B1 (de) 2010-12-08

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP02761991A Expired - Lifetime EP1372435B1 (de) 2001-03-30 2002-04-01 Pumpe mit axialer führung

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EP (1) EP1372435B1 (de)
CA (1) CA2442553C (de)
WO (1) WO2002082955A1 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6990700B2 (en) * 2001-06-22 2006-01-31 Team Worldwide Corporation Inflatable product provided with electric air pump
DE20211675U1 (de) * 2002-07-29 2002-09-19 Yen Stanley Luftpumpe
GB2399395A (en) * 2003-03-13 2004-09-15 Po Hung Lin Fluid pump with helical impeller
US20080201857A1 (en) 2007-02-23 2008-08-28 The Coleman Company, Inc. Built-in pump for an airbed with a single valve
AU2012292950B2 (en) * 2011-08-05 2015-10-29 Resmed Motor Technologies Inc. Blower
GB2573813A (en) * 2018-05-18 2019-11-20 Dyson Technology Ltd A Compressor

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4829616A (en) * 1985-10-25 1989-05-16 Walker Robert A Air control system for air bed
US6206654B1 (en) * 1999-04-15 2001-03-27 Dlm Plastics Corporation Air mattress inflation apparatus

Also Published As

Publication number Publication date
WO2002082955A1 (en) 2002-10-24
EP1372435A1 (de) 2004-01-02
CA2442553A1 (en) 2002-10-24
CA2442553C (en) 2011-09-20

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